400765874 has 8 divisors (see below), whose sum is σ = 601233948. Its totient is φ = 200354560.

The previous prime is 400765867. The next prime is 400765903. The reversal of 400765874 is 478567004.

It can be written as a sum of positive squares in 2 ways, for example, as 400600225 + 165649 = 20015^2 + 407^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×400765874² = 321226571525967752, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18854 + ... + 34014.

Almost surely, 2^400765874 is an apocalyptic number.

400765874 is a deficient number, since it is larger than the sum of its proper divisors (200468074).

400765874 is a wasteful number, since it uses less digits than its factorization.

400765874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28380.

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 400765874 is about 20019.1376937170. The cubic root of 400765874 is about 737.2762505763.

The spelling of 400765874 in words is "four hundred million, seven hundred sixty-five thousand, eight hundred seventy-four".